Mat 11, 1917] 



SCIENCE 



461 



June 2. "Vacant-lot Gardening," by Mr. Carl 

 Bannwart. 



June 9. "Garden Eoses," by Professor A. C. 

 Beal. 

 (Exhibitipn of Eoses and Peonies, June 9 and 10.) 



June 16. "The Seaweeds of New York and Vi- 

 cinity, ' ' by Dr. M. A. Howe. 



June 23. "Lilliea for Everybody," by Mr. Ar- 

 thur Herrington. 



June 30. "The Pood Value of Wild Mush- 

 rooms," by Dr. W. A. Murrill. 



We learn from the Fisheries Service Bulletin 

 that in the early part of September the Fish 

 Hawlc made another cruise in Chesapeake Bay 

 for the purpose of ascertaining the abundance 

 and quality of the hydroid, or " sea moss," 

 material available at this season. A Baltimore 

 manufacturer of sea-moss articles accompanied 

 the vessel. While the growth is not of the best 

 quality at this season, abundant supplies were 

 obtained, and the manufacturer expressed him- 

 self as well satisfied with the opportunity for a 

 commercial fishery. On the conclusion of this 

 trip the eighth regular cruise of the Chesapeake 

 Bay investigation was completed. During the 

 latter part of Augnrst the schooner Grampus 

 left JSTorfolk, Va., to continue investigations in 

 Atlantic coast waters, in charge of W. W. 

 Welsh. A line of hydrographic stations was 

 first made from Cape Henry to the gulf stream. 

 About twenty miles southeast by east from 

 Cape Henry a good haul of croakers was made 

 with a small otter trawl, suggesting the possible 

 use of this type of net for the capture of this 

 species. Samples of sargassum weed were ob- 

 tained for analysis in regard to the possible 

 use of this material as a source of potash, and 

 possibly of iodine and bromine. The vessel 

 then proceeded to Cape May, N. J., and an 

 examination was made of the pound nets in the 

 vicinity of Five Fathom Bank. Observations 

 were continued between Cape May and Glou- 

 cester, Mass. At the latter point a shortage of 

 seamen made it necessary to tie up the vessel, 

 and the work that had been planned for the 

 Gulf of Maine was, therefore, abandoned. 



lege to replace the one burned down last Oc- 

 tober. 



Five departments of fellowships in mining 

 and metallurgical research, each valued at 

 $720 for a year of twelve months, are offered 

 by the College of Mines of the University of 

 Washington in cooperation with the federal 

 Bureau of Mines. 



Dr. Edwaed M. Freeman, assistant dean of 

 the department of agriculture of the Univer- 

 sity of Minnesota, has been offered the dean- 

 ship of the college of agriculture of the Uni- 

 versity of Arizona, at Tucson. 



The following instructors at Wellesley Col- 

 lege have been advanced to assistant professor- 

 ships: Mabel A. Stone, botany; Helen S. 

 French, chemistry, and Sarah R. Davis, hy- 

 giene. 



Dr. Howard Parshley, who has been work- 

 ing at the Bussey Institution, Harvard Univer- 

 sity, has been appointed assistant professor of 

 zoology at Smith College. 



Fred T. Eogees, Ph.D., assistant professor 

 of physiology in Baylor University, Waco, 

 Texas, has been appointed to an instructorship 

 in physiology at the University of Chicago. 



J. F. Reilly has been promoted to an asso- 

 ciate professorship of mathematics at the State 

 University of Iowa. 



Victor E. Rector, principal of the Antioch 

 Industrial School near Hartsville, S. C, and a 

 member of the House of Representatives, has 

 been elected professor of agriculture at the 

 University of South Carolina. 



UNIVERSITY AND EDUCATIONAL 



NEWS 

 Plans are now being prepared for a new 

 chemistry building at the Montana State Col- 



DISCUSSION AND CORRESPONDENCE 



THE VARIETAL RELATIONS OF CROWN GALL 



The disease known as crown gall and hairy 

 root has been the subject of much experi- 

 mental inquiry. It has long been known that 

 there were several forms of this disease ap- 

 pearing on apple trees and for some time it 

 was a question whether these several forms 

 were due to the same causal organism. There 

 have been recognized a hard and a soft form 

 of crown gall and the simple, woolly knot, 

 broom root and aerial forms of hairy root.^ 



1 Hedgecoek, Bureau of Plant Industry, Bulletin 

 186. 



